# !/usr/bin/env python
# -*- coding: utf-8 -*-

if __name__ == '__main__':
    arr = [1, 2, 3, 4]
    arr2 = [x + 3 for x in arr if x % 2 == 0]
    print(arr2)

    for x in arr2:
        print(x)

    for i in range(len(arr2)):
        print(i, arr2[i])
